Originally posted by bdery I also never used the 75-150 but I hear good things about it.
Indeed a very good lens and a sleeper. Sharp and very nice colours.
Together with the great M35-70 F2,8 - 3,5 one of the best manual Pentax zooms and not too heavy.
Well built. No focus creep. Internal Zoom!
It is particular great for the price, one can find it very cheap.
Both those M-zooms have a pretty long focusing distance, which I believe is part of their magic:
Close focusing abilitity seems to compromise IQ.
And yet:
Another great one is the A 70-210! Macro 1:4 at 210mm.
Heavy.. and some zoomcreep which can be a bit annoying.
But it's an A lens and F4 all the way through!